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Christian Taveras's avatar
Christian Taveras
Iron Contributor
Oct 16, 2017

Multi-factor Authentication breaks outlook

Just wondering if anyone has run into this issue.     I have been Turning on MFA for users a group at a time all was going smooth.  The next morning after turning on MFA for the last hand full of u...
admin
exchange
office 365
security
Afisher25's avatar
Afisher25
Copper Contributor
Dec 20, 2019

This is how we fixed the issue. 

Fix 1 was go to a different PC and setup outlook then export KEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity and then go to the PC that is not working and delete all the keys from within this directory and then import the exported file from the working PC. 

Fix 2

We went to KEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity and removed these entries in the registry.

"ConnectedAccountWamAad"="eba13797-f788-4703-be3b-eb3bcd516147"

"ConnectedWAMIdentity"="eN64CdJkOrIQs11PRFgzde4uBi5v7oEeiNK5ZF4JXFk"

"DisableADALForExtendedApps"=dword:00000000
"DisableADALSetSilentAuth"=dword:00000000

"DisableHttpRequestWinTimings"=dword:00000000

"DisableSessionAwareHttpClose"=dword:00000000

"EnableADAL"=dword:00000000

"Mso99lUpdatedForADALExtendedApps"=dword:00000001

"msoridDisableOstringReplace"=dword:00000000

"msoridDisableGuestCredProvider"=dword:00000000

RainRunner's avatar
RainRunner
Copper Contributor
Mar 01, 2022

Afisher25Yor save my day. Thx. Fix 2 works for me.